Protector for vaporproof lamps



y 1950 R. POPP ET AL PROTECTOR FOR VAPOR PROOF LAMPS Filed March 30,1946 INVENTORS Rudolf Popp Marvin C. Carlson Patented July 4, 1950PROTECTOR FOR VAPORPROOF LAMPS Rudolf Popp'and Marvin C. Carlson,Valparaiso,

Ind., assignors to McGill Manufacturing Company, Inc., Valparaiso,: Ind,a corporation of Indiana Application March 30, 1946, Serial No. 658,440

This invention relates generally to portable lamps and in particular toa guard structure for vapor proof portable lamps.

For use in shops and other places where there is vapor or particlesin'the air which would be ignited by a spark, vapor proof lamps having aglobe cooperating with the base of the lamp to completely seal thecontacts of the socket of the lamp have been used. In many cases theselamps are subject to rough usage and protecting guards are necessary toprevent breaking of the globe or other damage to the lamp. Such guardshave in general been large and cumbersome structuresfwhich make the lamphard to handle and have not been entirely satisfactory for protectingthe lamp. Such a structure must protect both the globe and the base ofthe lamp and be effective to prevent transmission of vibration or shockreceived by any part of the lamp to the globe to thereby prevent damagethereto.

It is an object of this invention to provide an improved guard for aportable vapor proof lamp which will be effective to protect the lampand in particular the vapor proof globe thereof from damage due tovibration'and shock.

Another object of the present invention is to provide a simple andrugged guard assembly for protecting vapor proof lamps which is alsoeffective to prevent undesired rolling of the lamp When it is placed ona flat surface.

2 Claims. (Cl. 240-54) A feature of this invention is the provision of va guard for a portable vapor proof lamp including a cage surrounding thevapor proof globe and a resilient member forming a shock proof mountingfor the cage and also serving as a bumper for protecting the base of thelamp.

A further feature of this invention is the provision of a resilientbumper for protecting the base of a portable lamp which includesprojections thereon to prevent said lamp from rolling when placed on atable or other fiat surface.

Other objects, features and advantages of this invention will beapparent from a consideration of the following description taken inconnection with theaccompanying drawings in which:

Fig. l is a side view of the lamp and guard according to the invention;

Fig. 2 is a cross-sectional view along lines 22 of Fig. 1;

Fig. 3 is a cross-sectional view along the lines 33 of Fig. 2 showingthe manner in which the guard is secured to the lamp base; and

Fig. 4 is a cross-sectional view along the lines mally received by thelamp base.

' 4401" Fig. 1 showing the bottom of the lamp base.

In practicing. our invention, we provide a wire cage of suchconfiguration to surround the va-' por proof globe of a portable lamp. Aresilient member is provided having a portion serving as a resilientmounting for the cage and another portion surrounding the base of thelamp constituting a bumper for absorbing shocks nor- The resilientbumper includes projections which will prevent the lamp from rollingwhen placed on a relatively fiat surface.

Referring now more particularly-to the draw- ".ings. in Fig. l isillustrated a portable lamp l vided for the portable lamp including acage I 4 and a resilient bumper member 19. The cage l4 includesprotecting members l5 made of wire and an annular member IE to which theprotecting members l5 are secured at one end. For

the purpose of connecting the wires at the other end a junction memberI! is provided to which the wires are secured and into which a hook l8for supportin the lamp is also secured.

The resilient member I9 is provided with a portion (Fig. 3) which formsa resilient mounting for the cage l4 and a portion 2| which surroundsthe base portion ll of the lamp to form a bumper for this portion.

Referring now particularly to Fig. 3, the base portion of the lamp isshown including a socket 22 for a light bulb and threads 23 forreceiving the globe l3. An annular resilient washer 24 is provided atthe base of the threads to form a resilient seat for the globe.Retaining members 25 (Fig. 2) are provided for holding the socket 22 inthe base, the retaining members being secured to the base by screws 26.For the purpose of securing the cage M to the base II, recesses 2! areprovided in the base for receiving screws 28 which extend through theresilient mounting 20 and into threaded openings 29 in the annularmember I6 of the cage. As shown in Fig. 4, four projections 3| areprovided on the base for the screws 28. Although four screws are shownin the drawings, any number may be used as are required depending uponthe size and construction of the lamp. As shown in Fig. 2, the bumperportion 2| of the resilient member include projections 30 which willprevent the lamp from rolling when placed on a relatively flat surface.

As is apparent from the foregoing disclosure, the resilient member 19serves the double function of acting as the resilient mounting for thecage and acting as a bumper for the base member ll. Vibrations andshocks received by the cage will be absorbed to a large extent bytheresilient member and will, therefore, not be transmitted to the baseportion and the globe.

material which is hard and relatively brittle,

this member is subject to breakage and the globe.

is very easily broken as there'sult of vibration and shock transmittedthereto through the threaded support in the base portion. As shown bythe dotted line in Fig. 1, the bumper12l pro-.

jects a sufiicient distance from the base portion so that if the lamp isdropped on a fiat surface only the handle and the resilient bumper cancontact gthersurface as .,the..base; portion itself does not projectinto the plane defined by the handle and. the bumper.: Accordingly, byuse of the-bumpen-gagdirect shock-to the base portion is not likely andin:most.1casesuwhen the lamp falls-the bumper-:will strike the floor andthe most severe shOCkwWill be absorbed therebypreventing damage to theibasev of the lamp and'the globe,

Accordingly, it;:is. seen-that we have provided a simple 1 andseffective guard: assembly fora: a vapor; proof lampincluding a metalcageportion which is of simple construction anda onepiece bumper andmounting which can be molded and lends; itself to inexpensiveconstruction;. The guard structure canbeappliedto vapor :proof lampswithout'modification thereon; the installation-being very simple; andeasily:;performed..

Although we; have described what we consider to :be. the, preferredembodiment: of. our.-invention, itis apparent that various. changes andmodifications can ,be made therein without .-'de-- parting. from thescope of the; invention as: defined in the appended claims.

We claim:

Aportable vapor proof lampahaving a rigid base: with a socket therein1fora light bulb'iand including means for receivingqa vaponproofy globe,fastening means; a uard -,1as semb1-y; se-..

As the base portion is constructed of Bakelite or other.

cured to said base by said fastening means for protecting said base andsaid globe including a Wire cage structure and a resilient bumpermember, said cage structure and said bumper member being so constitutedand arranged that both are secured concurrently to said base by saidfastening nreans,..saidbumper'member'zbeing of generally' annularconfiguration and including a portion positioned between said base andsaid "cage structure to serve as a resilient mounting ing a mountingportion. and .a.-:bumper-portion,-

with said mounting portionrbeingpositioned between said .base andsaidguard to absorb vibration\ and shock received by-said guard-andprevent-transmission*thereof 'to said base-and saidglobe,-.and saidbumper portion: extending around said base to absorb shocks normallyreceivedby, saidxbase thereby preventing-damage to said base and--said;. globe,- said bumper portion-includingprojection-s thereon whichprevent the lamp from rolling,

RUDOLE POPP,

MARVIN- C. CARI'JSON.

REFERENCES-- CITED The following references are of recordin thefile, ofthistpatent UNITED "STATES PATENTS Number Name Date 1,314,846 AndersonSept. 2,'1919 1,336,761. Stolzenwald Apr; 13, 1920'" 1,791,625 Ko'llathFeb. 10,1931 1,829,345 Eastman Oct.27,' 1931" 1,886,326. Cadieux' Nov.1, 1932 2,209,931? Pop'p, July 30,.1940

Bissell June 16, 1942"

